Pipe-twisting machine.



No; 633.389. Patented Sept. I9, I899.

' W. Ill. REYNOLDS.

PIPE TWISTING MACHINE.

(Appliclcion filed. June 21, 1899.)

' 2 Sheets-Sheet I.

(No Model.)

///II//Ill/II/I/III/IIIIIIII/l W Inventor Attorney w. m. mzvnoms. PIPETWISTING MACHINE.

(Application filed June 21, 1899.

l1? g i 'llllllllllllllllllllll Tn/MSM i W Inventor Attorney Sinconnection with the ings, in which IFFICE,

WILLIAM t1. REYNOLDS, osoiNoiNN'A'rI, OHIO, ASSIGNOR TO'THE AMERICANSTEEL ROOFING COMPANY,

I OF SAME PLACE.

PlPE TWlSTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 633,389, datedSeptember 19, 1899.

Application filed June 21, 1899.

To all whom it may concern.-

,Beitknown that LVVILLIAM M. REYNOLDS, a citizen of the United States,residing at Cincinnati, Hamilton county, Ohio, have invented certain newand useful Improvements in Pipe-Twistin Machines, of which the followingis a specification This invention pertains to improvements in machinesfor twisting corrugated sheetmetal pipes. v v w The manufacture ofcorrugated twisted sheet-metal pipesin the manner contemplating theemployment of my present machine may be briefly described as, tirst,for1ninga cylindricalsheet-lnetalpipe by rolling and seaming a sheetwhose ends a e cut on bevels, so as to form-helical extremities to thepipe: second longitudinally corrugating the pipe, and, third, twistingthe corrugated pipe, the twisting operation, causing one member of I theseam to creep endwise with reference to the other membenwhereby thehelical quality at the end of the pipe disappears. The present machineis for twisting the pipe.

My improved machine will be readily understood from the followingdescription,taken accompanying draw- I Figure 1 is a side elevation ofmy improved -rnachine,a portion of spring 24 being omitted; Fig, 2, avertical longitudinal section of the same; Fig. 3, a planof the same;Fig. 4, an elevationof the tail end of the machine, the tail end beingat the left in Figs. 1,2, and 3; and Fig. 5, a vertical transversesection of the machine viewed in the same direction as In the drawings,1 indicates the legs of the machine; 2, a pair of angle-bars disposedparallel and secured at their ends to the legs and forming the bed-plateof the machine; 3, the tail-stock,secured at one end of the bed-plate;4, the tail-spindle, .journaledin the tail-stock;

5, a spur-gear fast on the tail-spindle; 6, a"

tapering corrugated plug secured removably against the inner face of thetail-spindle con centric with the journal thereof and projecting towardthe opposite end of the machine; 7, a bolt passing axially through thetailspindle and plug 6 and serving to secure the plug removably to thetail spindle tB, a collar sem No. 721,291. No model.)

on the inner end of the tail-spindle; 9,a tongue and groove diameticallydisposed in the facial joint between the tail-spindle and plug 6 andserving as a dog, by means of which the plug is forcibly turned by thetail-spindle, the illustration showing the groove as being formed in thetail-spindle and the tongue as being formed on the plug; 10, alongitudinal shaft mounted in the framing parallel with the axis of thetail-spindle and extending from one end of the machine to the other; 11,a pinion on the tail end of said shaft in the vertical plane of gear 5;12, an idle intermediate gear running loose on a stud at the tail end ofthe framing, this gear engaging pinion 11 and gear 5 and serving tocause the tail spindle to turn in the same direction as shaft 10; 13,'apair of angle-irons secured to'the head end of the bed-plate and formingslide-guides for the head-stock; 14, the headstock, mounted for slidingmotion on guides 13; 15,a head-spindle 'journaled in the headstock andhaving a gear similar to that of the tail-spindle; 16, a collar on .theouter end of the head-spindle; 17, the head-plug, similar to tail-plug 6and having similar tongue-andgroove engagemeht with its spindle; 18, theaxial bolt for coupling the head-plug to the head-spindle',-10, a pinionsplined on shaft 10 and shrouded to and engaging directly with the gearof the head-spindle, whereby the two spindles move longitudinally withthe head-stock and turn in opposite directions as shaft 10 is turned;20, a hand-orank'on shaft 10; 21, a fulcrum-brace secured at one side ofthe head of the bed-plate; 22, a stop-brace secured at the opposite sideof the head of thebed-plate and having a notch at its outer end; 23, ahand-lever fulcrumed on brace 21 and pivoted to head stock 14 andprojectingoutwardly over-brace 22 and adapt ed to lie in the notchof thelatter brace when movedto outward. position, and 24: a spring engagingthe bedplate. and lever 23 and serving .to urgethe lever and head-stocktowardthe tail-stock.

he corrugated sheet-linet-alp t wisted is, as before intimated,-soformedvts to have helical ends olfsetting at the SQELlll Qf. the pipe;The plugs 6 and 17 are of such size and contour as to partly enter theends of the pipe.

plugs is to be such as to readily admit the length of pipe when thehead-stock is in its retracted position with the lever in the notch.

,The corrugated pipe being taken in hand is to have its tail end placedinto engagement with tail-plug 6, its head end then being brought intoalinement with head-plug 17, after which lever 23 is raised from itsnotch in stop-brace 22, the lever then being swung to the left till headplug 17 nters the head end of the pipe, the spring serving to producethis advancing motion of thehead-stock as soon as the lever is releasedfrom the notch. The pipe is thus brought into engagement with the twoplugs, the spring tending to urge the head-plug toward the tail-plug.The hand-crank is now turned the desired number of turns for twistingthe pipe. During this twisting operation one end of the pipe is turnedin one direction, while the other end is turnedin the other direction,one of the seam members of the pipe creeping to the left, while theother member creeps to the right, the helical ends of the pipe formed bythe ofisets of the seam becoming neutralized by the creeping of the seammembers, the pipe ends readjusting themselves endwise upon the plugs asthe twisting progresses, the spring constantly moving the head-stocktoward the tail-stock to keep the plugs into proper tight engagementwith the pipe ends as the character of the pipe ends change from thehelical to the plane and as the pipe becomes shortened by the twistingoperation. The pipe thus becomes uniformly twisted and withoutanydistortion of its ends where they are engaged by the plugs. Thetwisting having been completed, the lever is swung to the right. andinto engagement with its notch in the stop-brace, thus retracting thehead-stock and permitting the removal of the finished pipe and leavingthe machine in condition for the reception of the next pipe.

The plugs are removable from their spindles in order that plugs may beselected and employed suited to the size of pipe .to be twisted.

I claim as my invention- 1. In a pipe-twisting machine, the combination,substantially as set forth, of a pair of tapering corrugated plugsarranged in a common axial line, a head-stock carrying one of said plugsand adapted for movement to and from the other plug, and means forrotating said plugs relative to each other.

2. In a pipe-twisting machine, the combination, substantially as setforth, of a pair of tapering corrugated plugs arranged in a common axialline, a head-stock carrying one of said plugs and adapted for movementtoand from the other plug, means for rotating said plugs relative to eachother, anda spring arranged to urge one of said plugs toward the other.

3. In a pipe-twisting machine, the combination, substantially as setforth, of a pair of tapering corrugated plugs arranged in a com- Thedistance between the two l mon axial line, a head-stock carrying one ofsaid plugs and adapted for movement to and from the other plug, andmeans I" or rotating said plugs simultaneously in opposite respcctivedirections. r

4. In a pipe-twisting machine, the combination, substantially as setforth, of a pair of tapering corrugated plugs arranged in acommon axialline, a head-stock carrying one of said plugs and adapted for movementto and from the other plug, means for rotating said plugs simultaneouslyin opposite respective directions, and a spring arranged to urge one ofsaid plugs toward the other.

5. In a pipe-twisting machine, the combination, substantially as setforth, of a bedplate, a tail-stock secured thereto, atail-spindlearranged for rotation in said tail-stock, a tapering corrugated plugsecured to said tailspindle, a head-stock mounted for sliding motion onthe head end of the bed-plate, a head-spindle journaled therein, atapering corrugated plug secured to said head-spindle, a shaft mountedlongitudinally in said bedplate, gearing connecting said shaft with saidspindles so as to turn the spindles in opposite relative directions, anda hand-lever connected with the head-stock and adapted to move itlongitudinally relative to the bed-plate.

6. In a pipe-twisting machine, the combination, substantially as setforth, of a bedplate, a tail-stock secured thereto, a. tail-spindlearranged for rotation in said tail-stock, a

tapering corrugated plug secured to said taillongitudinally relative tothe bed-plate, and

a spring connected with said head-stock and tending to urge it towardthe tail-stock.

7. In a pipe-twisting machine, the combination, substantially as setforth, of a bedplate, a tail-stock secured thereto, a tail-spindlearranged for rotation in said tail-stock,

a tapering corrugated plug tongue andgrooved to said tail-spindle, ahead-stock mounted for sliding motion on the head end of the bed-plate,a head-spindle journaled therein, a tapering-corrugated plug secured tosaid head-spindle, ashaft mounted longitudinally in said bed-plate,gearing connecting said shaft with said spindles so as to turn thespindles in opposite relative directions, a

' hand-lever connected with the head-stock and adapted to move itlongitudinally relative to the bed-plate, and axial bolts engaging thespindles and tapering plugs.

WILLIAM M. REYNOLDS. \Vitnesses:

J. W. SEE, JAMES FITTON.

